M42 T-thread Spacer Kit (5mm, 10mm, 15mm, 30mm)This kit includes four spacers 5mm, 10mm, 15mm, and 30mm designed to fit M42 threads and allow you to achieve the focus when using your telescope with your cameras. Made from high quality materials, each spacer is precision machined to ensure a secure fit and superior optical performance. With this kit, you can easily adjust the spacing between your telescope's focuser and your camera to achieve optimal image quality and clarity.